| 覆盖决策系统的相对约简 |
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| 引用本文： | 张燕兰,李进金.覆盖决策系统的相对约简[J].工程数学学报,2009,26(5). |
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| 作者姓名： | 张燕兰 李进金 |
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| 作者单位： | 漳州师范学院计算机科学与工程系,漳州,363000 |
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| 基金项目： | 国家自然科学基金，福建省高校项目，漳州师院科学研究资助项目 |
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| 摘 要： | 一个知识相对于另一个知识的关系在实际应用中十分重要,而覆盖是一种重要的知识.本文讨论知识的相对约简,保持一个覆盖相对于一族覆盖的正域不变的条件下,提出覆盖相对约简的概念,给出覆盖相对协调集和覆盖相对核心的判定定理,推广了不协调覆盖决策系统相对约简理论,该理论对于知识的相对约简有重要意义.
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| 关 键 词： | 正域 覆盖 相对约简 |
On Relative Reduction of Knowledges in Covering Decision Systems |
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| ZHANG Yan-lan,LI Jin-jin.On Relative Reduction of Knowledges in Covering Decision Systems[J].Chinese Journal of Engineering Mathematics,2009,26(5). |
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| Authors: | ZHANG Yan-lan LI Jin-jin |
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| Affiliation: | ZHANG Yan-lan,LI Jin-jin (Department of Computer Sciences and Engineering,Zhangzhou Normal University,Zhangzhou 363000) |
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| Abstract: | The relative relation between one knowledge and another is important in application. This paper proposes the relative reduction of knowledges in coverings and defines covering relative reduction,which preserves the positive region of a covering. A discernibility matrix is also constructed to establish the judgement theorem for covering consistent set and covering core. Then,the theory of relative reduction in inconsistent covering decision systems is generalized. |
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| Keywords: | positive region covering relative reduction |
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